Adjustable mount for a telescopic firearm sight



StAHCH ROOM w. GAGNIER 3,134,174

ADJUSTABLE MOUNT FOR A TELESCOPIC FIREARM SIGHT May 26, 1964 Filed July 5, 1962 WA LTER GAGN/ER United States Patent F 3,134,174 ADJUSTABLE MOUNT FOR A TELESCOPIC FIREARM SIGHT Walter Gagnier, Paradise, Calif. (1137 Cameron Court, Concord, Calif.) Filed July 5, 1962, Ser. No. 207,577 3 Claims. (Cl. 3350) This invention relates to a novel mounting structure for adjustably and detachably mounting a telescopic sight on a firearm and more particularly to a mount by. means of which the telescopic sight and parts of the mount, embracing said sight, may be readily moved to an elevated position so that the conventional firearm sights may be utilized.

Another object of the invention is to provide a mount for a telescopic sight including means for adjusting the mount, and the sight carried thereby, relative to the firearm to provide corrections and adjustments for windage and elevation.

Still a further object of the invention is to provide a telescopic sight mount which, after being elevated to an inoperative position to enable the conventional firearm sights to be utilized, can be readily returned to an operative position and without disturbing previously made adjustments for windage and elevation, thus enabling the firearm to be accurately fired at either long range or close range without the delay normally occasioned by adjustment of the sights for different ranges.

Various other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawing, illustrating a presently preferred embodiment thereof, and wherein:

FIGURE 1 is a top plan view of the adjustable mount and a part of a firearm on which the mount is secured;

FIGURE 2 is a side elevational view thereof partly in section and with a conventional telescopic sight, shown broken away, applied to the mount;

FIGURE 3 is a transverse sectional view, primarily in elevation, taken substantially along a plane as indicated by the line 33 of FIGURE 2;

FIGURE 4 is an enlarged fragmentary longitudinal sectional view taken substantially along the line 44 of FIGURE 1;

FIGURE 5 is a cross sectional view, primarily in end elevation, taken substantially along a plane as indicated by the line 5-5 of FIGURE 2;

FIGURE 6 is an enlarged fragmentary longitudinal sec tion view, taken substantially along a plane as indicated by the line 6--6 of FIGURE 1, and

FIGURE 7 is an enlarged fragmentary longitudinal sectional view taken substantially along a plane as indicated by the line 77 of FIGURE 1.

Referring more specifically to the drawing, the adjustable telescopic sight mount in its entirety and comprising the invention is designated generally 10 and includes a front block 11 and a rear block 12, as best seen in FIG- URES 3 and 5, respectively, which are mounted in longitudinally spaced apart relation to one another on the upper part of the action 13 or other suitable portion of a firearm. The mounting blocks 11 and 12 have bottom surfaces shaped to conformably fit the firearm parts engaged thereby and are each secured thereto by a suitable fastening or fastenings 14. The front mounting block 11 has a laterally extending side portion or ledge 15 and the rear block 12 has a laterally extending side portion or ledge 16 which projects from the same side of the firearm as the ledge 15.

As best seen in FIGURE 6, the ledge 15 has a longitudinally extending forwardly opening slot 17 to loosely receive therein a flattened shank 18 having a transverse bore 19 which journals on a pin 20. The pin 20, as best Patented May 26, 1964 seen in FIGURE 3, is threadedly mounted in the ledge 15 and transversely thereof so as to project across the slot 17 and through the bore 19. The shank 18 constitutes the lower end of an internally threaded upwardly opening socket 21 which has an enlarged base 22, disposed between said socket and the shank 18, which base and the socket 21 are of circular cross section.

A mounting plate 23 has a forward portion 24 the underside of which is provided with a longitudinally extending groove 25 which loosely straddles the upper part of the front block 11, as seen in FIGURE 3. The plate 23 has a rear portion 26 which is also providedwith a longitudinally extending groove 27 in its underside to straddle the top portion of the rear block 12 and which is of a width substantially greater than the width of the top portion of said rear block.

As seen in FIGURES 3 and 6, one side of the front plate portion 24 overlies and is spaced slightly from the ledge 15 and is provided with a bore 28 which extends vertically therethrough to accommodate the socket 21 and its base 22 for swinging movement of the plate 23 relative to said socket 21 and its base 22. A screw 29, carrying a washer 30, is threaded downwardly into the socket 21 for attaching the mounting plate 23 to the front block 11. The socket 21 and base 22 has an over-all length slightly greater than the length of the bore 28 so that the screw 29 cannot be tightened sufficiently to cause the washer 30 to bind against the upper surface of the plate end 24. As seen in FIGURE 7, the top surface of the upper central portion of the front block 11 slopes downwardly and forwardly, as seen at 31, from a point in alignment with the pivot pin 20 to its forward end, so that the mounting plate 23 can rock with the connector 18, 21 about the pin 20 and thus about an axis disposed in a horizontal plane and crosswise of the sight mount 10. Accordingly, the plate 23 swings about the vertical axis as constituted by the socket 21 and the horizontal axis as defined by the pin 20 to effect windage and elevation adjustments, respectively, of said sight mount.

A portion of the part of the rear plate portion 26 which overlies the ledge 16 is beveled on its underside toward and to its rear end, as seen at 32 in FIGURE 2. A wedge 33 fits between the upper side of the ledge 16 and said beveled surface 32 and has a downturned lip 35 at its rear end which is disposed beyond and spaced from the rear ends of the ledge 16 and plate portion 26 and which lip is provided with a downwardly opening notch 36, as seen in FIGURE 5. A screw 37 threadedly engages in a bore 38 of the ledge 16 and which bore opens outwardly through the rear end of said ledge. The screw 37 has a grooved head 39 which is received in the notch 36 for connecting the screw 37 to the lip 35 so that said screw is rotatable only relative to the wedge 33. A locking screw 40 extends downwardly through a transversely elongated slot 41 in the plate portion 26 and threadedly engages in the ledge 16, said screw 40 having a loose engagement in the opening or slot 41. The thin forward end of the wedge 33 has a forwardly opening notch 42 through which the locking screw 40 extends. The rear edge of the plate portion 26 is provided with windage graduations 43, as seen in FIGURE 5, in the part thereof disposed over the wedge 33, and the upper surface of the wedge has an index mark 44, as seen in FIGURE 1, utilized with the graduations 43.

The sight mounting 10 includes a front collar or mounting assembly, designated generally 45, and a rear collar or mounting assembly, designated generally 46.

The front assembly 45 includes a bottom section or cradle 47 which is disposed crosswise of and rests upon the front plate portion 24, and a top section 48 disposed above the bottom section 47 and which is secured thereto by two fastening screws 49, as best seen in FIGURE 4.

As is conventional, the collar halves 47 and 48 have opposed semicircular recesses forming a circular opening 50 in which a part of a barrel 58 of a telescopic sight is received and detachably clamped by tightening the screw fastenings 49.

Two corresponding posts 51 are secured in and extend upwardly from the forward plate portion 24, as best seen in FIGURE 4, and are disposed in transverse alignment with one another, as seen in FIGURE 1. The front collar 45 has two bores 52 extending from top to bottom through the two sections thereof and in which the posts 51 are received for mounting the collar 45 on the plate portion 24. Each post 51 has a lower groove 53 and an upper groove 54. The lower collar section 47 has bores 55 which open into the bores 52 and outwardly of the rear side thereof, in each of which is received a detent ball 56 which is urged toward the bore 52 by a spring 57 which is held in the bore 55 by an abutment screw 59 which threadedly engages the rearwardly opening end of the bore 55. The lower grooves 53 are disposed so that the detent balls 56 seat therein, as seen in FIGURE 4, when the lower collar section 47 is resting on the plate portion 24; By pulling upwardly on the collar 45, the detent balls 56 will be cammed out of engagement with the grooves 53 enabling the collar 45 to slide upwardly on the posts 51 until the detent balls 56 spring into engagement with the upper grooves 54, to latch the collar 45 in its raised dotted line position of FIGURE 2. Each of the posts 51 includes a cap 60 which is threadedly mounted on the upper end thereof, which caps are applied to the posts The lower section 61 and the upper section 62 of the rear collar 46 are attached together by the fastenings 49 in the same manner as the sections of the front collar 45. The rear collar 46 differs from the front collar 45 in that said rear collar is provided with only one bore 52 and is mounted on the rear plate portion 26 by a single post 51,

which permits the rear collar 46 to be raised and lowered in the same manner as the front collar 45, as seen in full and dotted lines in FIGURE 2. It will be understood that the collars 45 and 46 will be connected as a unit by the sight barrel 58, when both collars are clamped to said sight barrel, and the rear collar 46 is capable of swiveling on its post 51 so that no bending or twisting forces will be exerted on the sight barrel as the collars are applied to the posts and vertically adjusted thereon.

From the foregoing it will be readily apparent that with the locking screw 40 loosened the mounting plate 23 may be swung about its vertical pivot 21'to'obtain desired windage adjustments,.and byturning thescrew 37 the wedge 33 EarTbefiioyed forwardly to rock the plate "23 about the horizontal axis-for elevating thereanend of said plate and thus obtain elevatioii' adjustments -of the sight mount 10. It will also be apparent that the collars 45 and 46 will move in unison with the plate 23 for obtaining these windage and elevation adjustments.

With the sight mount thus adjusted for windage and elevation for a desired range and with the collars 45 and 46 disposed on and in engagement with the plate 23, as seen in full lines in FIGURE 2, the telescopic sight is supported in an operative position for use. If it is desired to fire at a close range, this can be accomplished. without delay by merely grasping and lifting upwardly on the latched in their operative full line positions of FIGURE 2 by the detent balls 56 and with the telescopic sight again positioned properly adjusted for elevation and windage according to the previous setting of the sight mount.

Various modifications and changes are contemplated and maybe resorted to, without departing from the function or scope of the invention as hereinafter defined by the appended claims.

I claim as my invention:

1.-"A telescopic sight mount comprising a plurality of I posts, means adapted .to be secured to a firearm and supporting said posts in upright positions above longitudinally spaced parts of the firearm, two collars adapted to be secured to longitudinally spaced portions of a telescopic I sight barrel, one of said collars having two bores slidably engaging two of said posts, the other collar having a single bore slidably engaging a third one of said posts whereby said last mentioned collar may swivel on said last mentioned post relative to the firearm, said posts cooperating with the collars engaged thereby for supporting the telescopic sight with the axis thereof substantially parallel to the axis of the firearm, and latch means releasably latching the collars to the posts in different vertically adjusted positions of said collars relative to the posts for positioning the telescopic sight in either a lowered plate having a front portion engaging on said front block and a rear portion engaging on said rear block, means connecting said front portion to the front block for rocking and swinging movement of the mounting plate relative to said frontblock about two axes disposed crosswise of one another, means connecting the rear portion of said mounting plate to said rear block for crosswise swinging movement and up and down rocking movement of the plate relative to the rear block, adjustable wedge means connected to said rear block and engaging under a part of the rear portion of the plate for varying the elevation of said rear portion relative to the rear block, clamping means connecting the rear block and rear portion of the plate for releasably clamping the plate in difierent angularly adjusted positions relative to said blocks, and front and rear telescopic sight engaging collars connected to and supported on said front and rear portions of the mounting plate and adapted to embrace and be secured to spaced portions of a telescopic sight.

3. A telescopic sight mount as in claim 2, and means secured to the mounting plate and on which said collars are slidably mounted for supporting the collars and telescopic sight in different adjusted positions relative to the mounting plate.

References Cited in the file of this patent UNITED STATES PATENTS 1,655,239 Priputnevich Jan. 3, 1928 2,493,254 Leupold Jan. 3, 1950 2,526,126 Gagnier Oct. 17, 1950 2,783,539 Dahlberg Mar. 5, 1957 3,029,516 Clee Apr. 17, 1962 

1. A TELESCOPIC SIGHT MOUNT COMPRISING A PLURALITY OF POSTS, MEANS ADAPTED TO BE SECURED TO A FIREARM AND SUPPORTING SAID POSTS IN UPRIGHT POSITIONS ABOVE LONGITUDINALLY SPACED PARTS OF THE FIREARM, TWO COLLARS ADAPTED TO BE SECURED TO LONGITUDINALLY SPACED PORTIONS OF A TELESCOPIC SIGHT BARREL, ONE OF SAID COLLARS HAVING TWO BORES SLIDABLY ENGAGING TWO OF SAID POSTS, THE OTHER COLLAR HAVING A SINGLE BORE SLIDABLY ENGAGING A THIRD ONE OF SAID POSTS WHEREBY SAID LAST MENTIONED COLLAR MAY SWIVEL ON SAID LAST MENTIONED POST RELATIVE TO THE FIREARM, SAID POSTS COOPERATING WITH THE COLLARS ENGAGED THEREBY FOR SUPPORTING THE TELESCOPIC SIGHT WITH THE AXIS THEREOF SUBSTANTIALLY PARALLEL TO THE AXIS OF THE FIREARM, AND LATCH MEANS RELEASABLY LATCHING THE COLLARS TO THE POSTS IN DIFFERENT VERTICALLY ADJUSTED POSITIONS OF SAID COLLARS RELATIVE TO THE POSTS FOR POSITIONING THE TELESCOPIC SIGHT IN EITHER A LOWERED OPERATIVE POSITION OR IN A RAISED INOPERATIVE POSITION. 